feat: sqlite full text search

[will7200]

Closes #103

This aims to be a drop in replacement for whoosh. with little to no API change for our customers.

1. Uses FTS4 as FTS5 requires some escaping of the search terms
2. Since the underlying search implementation strips out certain characters out during tokenization, these characters that might be of value to the customer are lost. Added functionality for the mask and filter operations to allows users to pass a callable to control their search better. Operations supported are those of sqlite3 column operators wrapped in pythonic operations.
   Examples:

   db.search("lollipop", mask={"product": lambda col: col == 'ZEBRA-2'})
   db.search("lollipop", mask={"product": lambda col: col.like('%ZEBRA-2%')})
   db.search("lollipop", mask={"product": lambda col: col.in_(['ZEBRA-2', 'ZEBRA-1'])})

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 16 lines in your changes missing coverage. Please review.

Project coverage is 83.24%. Comparing base (802dafe) to head (0c61d18).
Report is 14 commits behind head on main.

Files	Patch %	Lines
bw2data/updates.py	22.22%	7 Missing ⚠️
bw2data/search/indices.py	95.95%	4 Missing ⚠️
bw2data/search/schema.py	87.87%	4 Missing ⚠️
bw2data/search/search.py	94.44%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #177      +/-   ##
==========================================
+ Coverage   83.07%   83.24%   +0.17%     
==========================================
  Files          39       39              
  Lines        3609     3730     +121     
==========================================
+ Hits         2998     3105     +107     
- Misses        611      625      +14     

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[cmutel]

@will7200 Awesome! One small comment which is an easy fix, and then fix some test failures, and we should be GTG!

[will7200]

@cmutel fixed that and found the underlying causing those test failures. The last two remaining windows failures are due to:

PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\tmpgwrprhc7\\dxbqkfxeszgknljeyz.46382e12\\lci\\databases.db'

Which looks like has happened in past github runs.